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' ,0. A. CARPENTER.

APPARATUS FOR B XG AVATING AND SGREBNING SAND, &o. No. 288,545. vPateiited'Nov. 13, 1883,

V M 4 Shees-S11eet 2.

'G.;A. CARPENTER. APPARATUS FOR EXGAVATING AND SCREENINQ SAND, 8w.

Patented Nov; 13, 1883.

(No Model.) '4 sheetssheet 3;

O A.OARP-ENT'ER. APPARATUS FOR BXGAVA'TING AND SCREENING SAND, &c. No. 28,545. Patented Nov. 13, 1883.

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o. 288,545. Patentd Nov; 13, 1883- w E o I o I q;

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' a I UNITED. STATES PATENT OFFICE.

coLns A. CARPENTER, or orsrnn BAY, new YORK.

APPARATUS FOREXCAVATING AND SCREENINGSAND, 800.

SPECIFICATION forming part of Letters Patent No. 288,545, dated November13, 1883,

Application filed April 3,1ssa. (No model.)

To all whom/it may concern:

Be it known that I, Corns A. CARPENTER,

, of the township of Oyster Bay, inthe county of Queens and State of NewYork, have'in 3 part of this specification, Figure 1 represents'provements embodied therein.

a front View of an apparatus having my im- Fig. 2 is a sideview of thesame. Fig. 3 is a rear view with a modified or additional arrangement ofthe receiving-bin and its parts, hereinafter againreferred to. Fig. 4 isa plan view of the supportingplatform. Fig. 5 is a trans,

verse section of the screening-cylinder provided with inner and outersieves; and Fig.

6, the same, illustrating the manner of connecting the sieve-sections inposition; Figs. 7 to 12, views show in detail various detached parts.

A represents aplatform mounted on rollers d, turning on stub-axles e,projecting from the sides of the platform. Four standards, A, aremounted on the platform A, and incline, as shown, to converge towardeach other at their top, and enable bolts a to secure them together atthat point. Cross-beams D D are secured to the standards A, about midwaythereof, and are supported at their rear pro jecting ends,d",by means ofa vertical standard, D, located on the rear end of the platform A. Eachof the beams D D carries near the forward standards A a bearing, throughwhich passes the shaft L, one end of which projects to receive asprocketewheel, K, the said shaft L also carrying pulleys it, aroundwhich pass thebelts it, one of which is driven from the stationaryengine I), located on the platform A, as clearly shown in Fig. 4, whilethe other belt communicates the motion it derives from its pulley to thesupply-pumpz' of the engine.

The. reference-letters a and c designate, respectively, the boiler andsupply-tank erected on the platform and performing their offices withrespect to the engine proper, and the sup ply-pump t.

The sprocket-wheel K imparts its rotarymovement by means of adrive-chain, K,to a second sprocket-wheel, K located on the end of andturning with a shaft, L, j ournaled in bearings secured to the front endof crossbeams k attached to the standards A above and parallel with thecross-beams D. The said shaft L has keyed thereon a pinion, K", whichmeshes with and imparts motionto cog-wheels I Oflmounted, respectively,on the projecting ends of shafts I O, journaled in bearings in thecross-beams I O", secured to the standards A respectively above andbelow the cross beams k and parallel therewith.

Centrally mounted on and revolving with the shaft I is a bevel-gearwheel, I, which meshes with and imparts motion to a gearwheel, H,atright angles to the wheel I, and turning with a shaft, E, inclined, asshown in Figs. 2 and 3,th e forward end of said shaft bearing on across-beam secured transversely of the front standards A A, in the rearof the gear wheelH, (but omitted from the drawings to avoid complexity,)and the rear end passing through and bearing in a hanger, F, secured toa transverse bar, F, supported by the beamsD D, the bearing-opening ofsaid hanger F being vertically elongated to permit a limited verticalplay of the rear end of the said shaft E therein.

On the extreme rear end of the shaft E is mounted a star or cam-head, G,Figs. 2and 10, which rests on the upper side of the bar F.

Rigidly mounted on the shaft E, between its bearings, are a seriesofspider-wheels, E, Figs. 5 and 6, the rims of which are perforated forthe passage of the ends of a series of radial rods, E, threaded theirentire length to adapt them to be secured rigidly to the spiders bymeans of nuts and washers E.

A screen, B, is formed of the cylindrical reticulated sections B, whichare clamped by the rods E and blocks E by means of nuts E.

A stationary screen, Q, Figs. 1, 7 and 8, composed of 'a series ofparallel rods, q, bolted to curved cross-rods q, is secured to one ofthe standards A, and extends into the lower part of the forward end ofthe screening-cylinder B, so that the latter can revolve around it.

An inclined trough, V, is located between the inner side of thedrivingbelt and the cylinder-screen, and projects over the stationaryscreen Q at its rear end.

The shaft carries a wheel, 0, around which passes the chain M, carryingthe excavating-buckets N, said wheel 0 being composed of spider-wheelshaving studded peripheral ribs 0', over which the chain passes,wood-sections O resting on collars 0, formed on the spokes of thespider-wheels, and formapparent that the entire apparatus is adapted tobe easily moved from place to place, that the hand-levers y can bereadily removed from their brackets to effect such movement, that ing ahexagonal support on which are tacked or nailed the edges of a series ofcanvas or other flexible strips or-shields, 0 which extend transverselythe width of the wheel 0.

A wheel, 0 similar to the wheel 0, is mounted on and revolves with ashaft, 0, se cured insuitable bearings at the base of the m-achine,an'dcarries the belt M, which travels around the same. The belt is composedof a V series of links, M, (see Fig. 9,) having one end cross-bar m ofthe link next preceding.

formed into a hook, m, adapted to engage the At regular intervals alongthe belt the links are provided with ears m, which are perforated forthe convenient attachment of the excavating-buckets. The recessedportions m of the links receive the studs on the wheels 0 and ,andfacilitate traction. A pulley, I, located between the forward projectingends of the bars D, rests between the sides of the excavating-belt, andprevents the sagging of the same at the center thereof.

A platform or slide, \V, arranged trans- .versely beneath the screeningcylinder, is

adapted to convey away the screened material, which the cylinderdeposits upon it.

The slide WV communicates, at its lower end, with a bin or receptacle,U, and in said bin or receptacle U is centrally pivoted, at 7', an-

. angle-platform, R, the outer end, 1", ofwhi-ch I is normally heldhorizontally by a weight or counterpoise, S, attached to thelever r ofsaid platform. Other slides and bins may be used where screens ofdifferent sizes are employed.

' The bin may be placed in the axial line or direction of the screen, asshown in Fig. 2, or at one side of the axial line, as seen in. Fig. 3,the slide W being in either arrangement placed so as to direct thescreenings to their destination, as shown. It is evident that botharrangements of bin may be used together, Y which may obviously be done,provided the I slides are given the required direction, which wouldinvolve no invention.

A centrally-pivoted arm, r, is connected by a rod, 4'', at one end tothe forward end, 1', of the platform R, while a lever, 1- effects thedepression of the rod 1", and hence the downward movement of theplatform B. When the platform R is in the position shown in Fig. 2, itcloses the opening r of the bin U,

. the shaft. the slide WV into the bin U, from whence it end of theplatform R serving as a chute or guide for the material. a

' Supporting-wheels p are journal'ed on axles p bearing in extensions 1)of the forward end of the platform A, while brackets E located on theouter sides of said extensions,

. are adapted for the longitudinal insertion and retention ofhand-levers 9, designed to be used .by the attendants in shifting theposition of the apparatus.

From the foregoing description it will be the links composing theexcavating-chain can be connected and disconnected with great falcility, additional links being incorporated therein without affectingthe balance of the chain, and that the buckets can be firmly and.

rigidly connected to their respective links without the expenditure ofmuch labor or time. ,of the chain-supporting wheels 0 o insures thepositivemovement of the excavating-chain. and buckets thereover, but atthe same time Moreover, the peculiar construction prevents the loosesand or other materialfrom effecting an entrance to the working parts ofI said wheels, and resulting in the clogging of the machinery. As theexcavating-chain is .rotated around the pulleys 0 0 the buck- I. ets onthe forward portion of said belt which moves upward become filled withthe material, and as they pass over the upper pulley, l O, to descend,they deposit their contents in i the trough V, from whence it passesonto the stationary screen Q, which sieves it intothe rotating cylinderB, which causes its separation and delivery onto the slide W. As therevolutions of the pulleys O O and excavating-belt M are effected fromthe intermediate connections with the engine on the platform,

the gearing of the pinion H on the shaft of v the screening-cylinder,with the gear-wheel on the shaft I, the revolution of the cylinder isproduced, and its vertical agitation is secured by means, of thecam-head G on the other end, the vertically-elongated opening'in thebearing F permitting the vertical movement of The screened materialpasses from can be readily removed by means of the tilt ing platform Rand its connections.

Having now described my invention, what 1. In an apparatus forexcavating, screen- 1ng, &c., the combination of a belt provided withexcavating-buckets, belt-driving mechanism, an inclined cylindricalscreen, means stantially as set forth.

2. I11 an apparatus for excavating, screening, &c., the bin U, havingtheopeningr, and

. I claim as new, and desire to secure by Letters Patent, is

counterbalanced platformR, combined with a screen, and the slide WV, fordirecting the screenings to the bin, substantially as set forth. 3. lhecombination,-in an apparatus forex- 5 cavating, screening, &c., ofwheels over which the excavating belt travels, provided with flexiblecoverings, substantially as and forthe l purpose set forth.

4. The combination, in an apparatus'for ex- IO cavating, screening, &c.,of wheels over which the excavating belt travels, provided with studdedperipheral ribs 0 and'collars O on the spokes of said wheels, adapted toreceive the sections 0 to which flexible sections are attached,substantially as set forth.

COLES CARPENTER.

